Table 3.
Underascertainment Multipliers and Estimates of Symptomatic Lyme Borreliosis Cases, Adults ≥30 Years, by Region, Finland, 2021
| Region | Total number of reported LB cases among adults ≥30 years in 2011 | Estimated number of incident LB cases among adults ≥30 years in 2011 | Multiplier (based on 2011 data) | Total number of reported LB cases among adults ≥30 years in 2021 | Estimated number of symptomatic LB cases among adults ≥30 years in 2021 |
|---|---|---|---|---|---|
| Northern | 38 | 199 | 5.3 | 154 | 811 |
| Eastern | 319 | 1,542 | 4.8 | 705 | 3,414 |
| Central | 206 | 2,501 | 12.2 | 593 | 7,207 |
| Western | 539 | 417 | 1.0 | 1,703 | 1,703 |
| Southern | 1,372 | 2,308 | 1.7 | 3,411 | 5,739 |
| Åland Islands | 637 | 186 | 1.0 | 779 | 779 |
| Nationwide | 3,110 | 7,153 | 2.7a | 7,346 | 19,653 |
a
Nationwide multiplier is derived from regional multipliers, weighted by the population size of each region; therefore, nationwide multiplier is not simply the ratio of the national estimated number of incident LB cases in 2011 to the national number of reported LB cases in 2011.
LB, Lyme borreliosis.